Here are some possibilities:
* A fictional book: This is the most straightforward answer. A fictional book is entirely made up, from the characters and setting to the plot and events. These books are purely imaginative, and they can range from realistic stories to fantastical adventures.
* A book inspired by real events but with creative additions: Some books are based on true stories, but the author might embellish or change certain details for dramatic effect or to create a more interesting narrative. This could be considered partly based on reality and partly imaginative.
* A book based on the author's personal experiences: Even non-fiction books can be seen as partly imaginative, as the author's perspective and interpretations are influenced by their own experiences and beliefs.
Essentially, all books are created from the imagination to some degree. The author must use their imagination to:
* Create a concept: What is the book about? What is the central idea?
* Develop characters: Who are the people in the story? What are their motivations and personalities?
* Build the setting: Where and when does the story take place?
* Craft the plot: What happens in the story? How are the events linked together?
So, while some books are more obviously imaginative than others, all books are created from the author's imagination to some extent.